The Hidden Problem: Hydration Has Always Been Personal — But We Treated It as Generic

The Hidden Problem: Hydration Is Personal, But Advice Is Generic

For years, hydration advice has focused on generic rules like “drink every 20 minutes” or “aim for two bottles per hour.” But no two athletes sweat in the same way. Sweat rate and sodium concentration vary based on genetics, fitness level, temperature, humidity, training intensity and more.

Without precise data, athletes risk dehydration, sodium imbalance, cramping and performance drops – especially in longer events or hot conditions. FLOWBIO tackles this problem by giving every athlete a unique hydration fingerprint based on real sweat data.

The FLOWBIO Sensor: Turning Sweat Into Science

The FLOWBIO Sensor is a compact wearable that attaches to an upper-arm strap or a compatible heart-rate-monitor chest strap. During your workout it continuously captures and analyses your sweat, transforming every drop into data.

What FLOWBIO Measures

• Sweat rate (fluid loss per hour) – understand exactly how much fluid you’re losing.
• Sodium concentration (mg/L) – see how salty your sweat really is.
• Total sodium loss per session – know how much electrolyte you need to replace.

After your session, you sync the sensor with the FLOWBIO app to turn these numbers into clear, personalised hydration guidance.

AHi®: Advanced Hydration Intelligence Explained

The FLOWBIO app doesn’t just show raw numbers. Powered by AHi® (Advanced Hydration Intelligence), it combines sweat data with your workout intensity, duration and environmental conditions to build a complete picture of your hydration needs.

Personalised Recommendations Include:

• How much to drink per hour, tailored to your sweat rate
• Optimal sodium concentration for your drinks
• Pre-session hydration guidance
• Post-session recovery targets for fluid and electrolytes
• Adjustments based on heat, humidity and session type

What used to require laboratory testing is now available on the road, track or trail – every time you train.

Why Real-Time Sweat Data Matters

1. Performance Gains

Even a small drop in hydration can reduce power output, endurance and mental sharpness. FLOWBIO helps you stay within your optimal hydration window so you can hold pace for longer and finish stronger.

2. Fewer Cramps, Better Balance

Cramping is often linked to sodium imbalance, especially in heavy or salty sweaters. By tracking your sodium loss, FLOWBIO helps you fine-tune your electrolyte strategy before problems show up mid-race.

3. Faster Recovery

Hitting your fluid and sodium targets after exercise supports faster recovery, better muscle function and more consistent training day after day.

4. Smarter Race Planning

For marathons, long rides and triathlons, hydration can make or break your day. FLOWBIO gives you data-backed numbers to build a race plan that’s tested in training and tailored to you.

Who Is FLOWBIO For?

• Marathon and ultra runners looking to avoid late-race fade.
• Cyclists and triathletes training and racing over long distances.
• Heavy or salty sweaters who often see salt marks on kit or skin.
• Athletes training in heat and humidity where sweat loss is extreme.
• Performance-focused fitness enthusiasts who want to optimise health and energy.

Pros and Cons: An Honest Look

What Athletes Love

• Truly personalised hydration and sodium insights
• Real-time sweat analysis not found in standard wearables
• Simple app interface with clear recommendations
• Actionable data that can be applied immediately in training and racing

Things to Consider

• Works best for endurance-style outdoor activities (running, cycling, walking)
• Requires wearing an additional sensor during sessions
• Hydration plans still depend on your discipline to follow them

FLOWBIO and the Future of Hydration Technology

As wearables evolve, athletes expect more than step counts and basic heart-rate graphs. FLOWBIO is part of a new wave of biomonitoring tools that use real physiological signals – like sweat – to inform smarter training decisions.

By turning an often-ignored biomarker into a source of performance insight, FLOWBIO helps move hydration from guesswork to science.